No, this is from their website last night. Their old plans (before the "Belief Project") had unlimited data. Then they started having with those "Data Plus" which had 5GB which appeared to be a soft cap at first. Now it's this.
Perhaps they're different in other more competitive regions. Here in MD, their overage limit is now $200. They're essentially charging $250 a GB, which makes AT&T and Verizon look like saints.